This is the best late night food stop Boulder has to offer! They're open till 2:30 am and serve up the best, greasy, large, thin, cheap ($3), pieces of cheese pizza I've ever had! Granted this is probably not the healthiest thing for you, but I have a feeling that around 2am you're not really caring or in the mood for a salad ;) Whatever you do, do not forget to get the * spicy ranch dip * - I wish I could describe this but it's really just too amazing for words! Just order it! You won't be disappointed! There should be a Cosmos in every college town!